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Date: Mon, 25 Sep 2023 00:01:36 +0300 Message-ID: <20230924210136.11966-29-kariem.taha2.7@gmail.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20230924210136.11966-1-kariem.taha2.7@gmail.com> References: <20230924210136.11966-1-kariem.taha2.7@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::42b; envelope-from=kariem.taha2.7@gmail.com; helo=mail-wr1-x42b.google.com X-Spam_score_int: -2 X-Spam_score: -0.3 X-Spam_bar: / X-Spam_report: (-0.3 / 5.0 requ) BAYES_00=-1.9, DATE_IN_PAST_03_06=1.592, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @gmail.com) X-ZM-MESSAGEID: 1695609594411100003 Content-Type: text/plain; charset="utf-8" From: Stacey Son Signed-off-by: Stacey Son Signed-off-by: Karim Taha Acked-by: Richard Henderson Reviewed-by: Warner Losh --- bsd-user/freebsd/os-proc.h | 32 ++++++++++++++++++++++++++++++++ bsd-user/freebsd/os-syscall.c | 4 ++++ 2 files changed, 36 insertions(+) diff --git a/bsd-user/freebsd/os-proc.h b/bsd-user/freebsd/os-proc.h index 0a3cd0ef57..d641878034 100644 --- a/bsd-user/freebsd/os-proc.h +++ b/bsd-user/freebsd/os-proc.h @@ -258,4 +258,36 @@ static inline abi_long do_freebsd_rfork(void *cpu_env,= abi_long flags) =20 } =20 +/* pdfork(2) */ +static inline abi_long do_freebsd_pdfork(void *cpu_env, abi_ulong target_f= dp, + abi_long flags) +{ + abi_long ret; + abi_ulong child_flag; + int fd; + + fork_start(); + ret =3D pdfork(&fd, flags); + if (ret =3D=3D 0) { + /* child */ + child_flag =3D 1; + target_cpu_clone_regs(cpu_env, 0); + } else { + /* parent */ + child_flag =3D 0; + if (put_user_s32(fd, target_fdp)) { + return -TARGET_EFAULT; + } + } + + /* + * The fork system call sets a child flag in the second return + * value: 0 for parent process, 1 for child process. + */ + set_second_rval(cpu_env, child_flag); + fork_end(child_flag); + + return ret; +} + #endif /* BSD_USER_FREEBSD_OS_PROC_H */ diff --git a/bsd-user/freebsd/os-syscall.c b/bsd-user/freebsd/os-syscall.c index 4c4e773d1d..d04712f0a7 100644 --- a/bsd-user/freebsd/os-syscall.c +++ b/bsd-user/freebsd/os-syscall.c @@ -238,6 +238,10 @@ static abi_long freebsd_syscall(void *cpu_env, int num= , abi_long arg1, ret =3D do_freebsd_rfork(cpu_env, arg1); break; =20 + case TARGET_FREEBSD_NR_pdfork: /* pdfork(2) */ + ret =3D do_freebsd_pdfork(cpu_env, arg1, arg2); + break; + case TARGET_FREEBSD_NR_execve: /* execve(2) */ ret =3D do_freebsd_execve(arg1, arg2, arg3); break; --=20 2.42.0